Being supportive to you wife's needs and interacting with her in a humble non-defensive way can defuse an argument and restore the balance of a relationship.
Some days around the office are rough and your wife may bring her work home with her. On these days your mistakes might escalate what is already a bad situation. They key is in how you respond. If you respond in a humble way and support your wife, even if you disagree, you can turn a potentially bad situation into a win.
And if you feel the need to express your dissenting opinion, you can do so later. You know, like on your death bed.